Coating hydroxyapatite

The head of the femoral component then articulates with an ion-bombarded, HDPE, high walled, acetabular liner which fits iato a screwed ia, machined, titanium, chromium—cobalt—molybdenum or vanadium—aluminum metallic alloy hydroxyapatite-coated acetabular shell/cup. Each of the separate parts of the modular system for total hip arthroplasty is manufactured ia several different sizes. 

Hydroxyapaite, the mineral constituent of bone, is appHed to the surfaces of many dental implants for the purpose of increasing initial bone growth. Some iavestigators beHeve that an added benefit is that the hydroxyapatite shields the bone from the metal. However, titanium and its aHoy, Ti-6A1-4V, are biocompatible and have anchored successfuHy as dental implants without the hydroxyapatite coating. 

L. Sun, C.C. Berndt, K.A. Gross, A. Kucuk, Material fundamentals and clinical performance of plasma-sprayed hydroxyapatite coatings A review, J. Biomed. Mater. Res. 58 (2001) 570-592. 

P. Cheang, K.A. Khor, Addressing processing problems associated with plasma spraying of hydroxyapatite coatings. Biomaterials 17 (1996) 537-544. 

K. Cheng, W. Weng, H. Wang, S. Zhang, In vitro behavior of osteoblast-like cells on fluoridated hydroxyapatite coatings. Biomaterials 26 (2005) 6288-6295. 

Weng, J., Liu, Q., Wolke, X G. C., Zhang, X., and de Groot, K., Formation and characteristics of the apatite layer on plama-sprayed hydroxyapatite coatings in simulated body fluid. Biomaterials 18 (15), 1027-1035 (1997). 

Cook SD, Thomas KA, Kay JF, Jarcho M (1988) Hydroxyapatite-coated titanium for orthopedic implant applications. Clin Orthop Relat Res 232 225-243... 

Tellefson LM, Germaine GR Adherence of streptococcus-sanguis to hydroxyapatite coated with lysozyme and lysozyme-supplemented saliva. Infect Immun 1986 51 750-759. 

X-ray radiography of nickel-coated fibers, surface atoms of hydroxyapatite, coating analysis of silane treated hydroxyapatite, and composition of the failure area of an adhesive joint between rubber and metal. This review of applications shows that carbon fibers are the most frequently tested material by XPS. 

Xie, J. et al., Novel hydroxyapatite coating on new porous titanium and titanium-tlDPE composite for hip implant, Surf. Coat. Technol., 202, 2960. 2008. 

Xie, J. and Luan, B.L.. Eormation of hydroxyapatite coating using novel chemo-biomimetic method.. 1. Mater. Sci. Mater. Med.. 19. 3211, 2008. 

In 2003, an up-to-date summary of studies was edited by Epinette and Manley (2003), describing the state-of-the-art of hydroxyapatite coatings in orthopaedics as this stood at the close of 2002. This compilation of results was designed to help to answer the still somewhat hotly debated question of whether the favourable results achieved in the short term with this method of biologic fixation of total joint implants has withstood the test of time. The goal of Epinette and Manley s book was mainly to determine if the use of hydroxyapatite coatings for the fixation of orthopaedic implants to bone has been proven by the survivorship and satisfaction of those patients who had received hip and knee implants. 

Epinette, J.A. and Manley, M.T. (2003) Fifteen Years of Clinical Experience with Hydroxyapatite Coatings in Joint Arthroplasty, Springer. ISBN 978-2-2070-0508-4. 

Coathup, M.J., Blackburn, J., Goodship, A.E., Cunningham, J.L., Smith, T., and Blunn, G.W. (2005) Role of hydroxyapatite coating in resisting wear particle migration and osteolysis around acetabular components. Biomaterials, 26 (19), 4161-4169. 

Lee, J.J., Rouhfar, L., and Beirne, O.R. (2000) Survival of hydroxyapatite-coated implants a meta-analytical review. / Oral Maxil. Surg., 58, 1372-1379. 

ASTM F 2024. (2010) Practice for X-ray Diffraction Determination of Phase Content of Plasma-sprayed Hydroxyapatite Coatings, ASTM International, West Conshohocken, PA. 

Heimann, R.B. (2009) Characterization of as-plasma-sprayed and incubated hydroxyapatite coatings with high resolution techniques. Materialwiss. Werkstofftech.,... 

Kobayashi, T., Itoh, S., Nakamura, S., Nakamura, M., Shinomiya, K., and Yamashita, K. (2007) Enhanced bone bonding of hydroxyapatite-coated titanium implants by electrical polarization. J. Biomed. Mater. Res. A, 82, 145-151. 

---